#!/usr/bin/python

from struct import *
from socket import *
from math import *

s = 4036 ## from 08049686 (3 < s <= 25000)
x = 4000 ## from 08049C6E (3999 < x <= 8000)
y = 2000 ## from 08048F96 (1999 < y <= ????)

## server
(ip, port) = ('127.0.0.1', 2600)

## wave header
data  = pack('L', 0x46464952) ## from 0804CE94
data += pack('L', s)          ## from 08049686 (3 < s <= 25000)
data += pack('L', 0x45564157) ## from 08049B3F
## wave fmt
data += pack('L', 0x20746d66) ## from 0804AA93
data += pack('L', 0x10)       ## default
data += pack('h', 1)          ## from 0804A9C7
data += pack('h', 1)          ## from ????????
data += pack('L', x)          ## from 08049C6E (3999 < x <= 8000)
data += pack('L', 1)          ## unused
data += pack('h', 2)          ## from ????????
data += pack('h', 0x10)       ## from 0804C21B
## wave data
data += pack('L', 0x61746164) ## from 08049996
data += pack('L', y * 2)      ## from 08048F96 (1999 < y <= ????)

s = socket()
s.connect((ip, port))

f = unpack('LLLLL', s.recv(20))

## from: http://apollon.cc.u-tokyo.ac.jp/~watanabe/sample/wavsample.html
for i in range(0, 5):
	for j in range(0, y / 5):
		data += pack('h', 128 * sin(j * 2 * f[i] * pi / x) + 128)

s.send(data)
print s.recv(256)
s.close